Abstract: The purpose of present study was to evaluate the differential behaviour of mung bean genotypes under salt stress. In this experiment five mung bean genotypes (Samrat, Sonali B1, Panna, Sukumar, and Bireswar) were evaluated under five different salinity conditions including control (0, 6, 10, 16 and 20 dSm-1). Mungbean (Vigna radiata (L.) Wilczek) varieties showed significant and distinct varietal difference during screening for salt tolerance at early seedling growth stage regarding the parameters of germination efficiency and seedling characters. More adverse effect was noticed in shoot length than that of roots. Samrat and Bireswar were found to be the most tolerant and sensitive in response to salt stress condition respectively.